Resposta da soja submetida a diferentes doses de adubo mineral e densidade de sementes.

Abstract

Soy has a great influence in human and animal alimentation, so, the consume is growing day after day and to meet this demand, the search for bigger productivities is increasing. Many are the practices of management that will determine the productivity of the soy, one of the most importants, it’s worth highliting the seeds density that will influence directly in the arrangement of the plants and plant growth. Another importante practice of management to the soy culture is the bases fertilization, because it will influence directly in the production, specially in soils of low fertility. This work, then, had as its aim to avaluate the effects of seeds densities, being them 9, 13 and 17 seeds per linear meter and different leves of fertilization in the base, being them 0,95 and 190 kg ha-1 from mineral fertilizer (formulated 3-21-21), the work was conducted in randomized blocks, constituting a factorial of 3x3 in 4 repetitions. In the trial, it was performed the mesure of the hights of plants from 30 to 30 days after the emergency and of the thatched diameter 90 days after the emergency, furthermore, it was made the counting of pods, weighing of one thousand grains and the productivity of different treatments. It was concluded that de density of 9 seeds per meter with the absence of fertilization presented a smaller productivity of the other treatments.